diff --git a/.claude/hooks/session-start.sh b/.claude/hooks/session-start.sh
new file mode 100755
index 0000000..d393e9e
--- /dev/null
+++ b/.claude/hooks/session-start.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+set -euo pipefail
+
+# Only run in Claude Code cloud sessions.
+if [ "${CLAUDE_CODE_REMOTE:-}" != "true" ]; then
+  exit 0
+fi
+
+# Install the rea CLI (used by the reverse-engineer-anything skill) if missing.
+if ! command -v rea >/dev/null 2>&1; then
+  npm install --global rea-agents
+fi
diff --git a/.claude/settings.json b/.claude/settings.json
new file mode 100644
index 0000000..e06b033
--- /dev/null
+++ b/.claude/settings.json
@@ -0,0 +1,14 @@
+{
+  "hooks": {
+    "SessionStart": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "$CLAUDE_PROJECT_DIR/.claude/hooks/session-start.sh"
+          }
+        ]
+      }
+    ]
+  }
+}